GCSE Chemistry, 4.8-Chemical analysis

Describe the test and result for hydrogen gas.

[2 marks]

Insert a burning splint and a pop sound.

Describe the test and result for oxygen. [2 marks]

Use glowing splint and relight splint.

Describe the test for carbon dioxide. [2 marks]

Use limewaters and turn into cloudy

Describe the test and result for chlorine. [2 marks]

Uses limtmus paper and turns white.

Describe test and result of solution of calcium, magnesium, and aluminum ions. [3 marks]

• Add sodium hydroxide.

• All white precipitate.

• Keep adding sodium hydroxide to aluminum solution will become clear.

Describe the test and result for solution of copper(ll) ions. [2 marks]

Add sodium hydroxide and form blue precipitate

Describe the test and result for solution of iron(ll) ions. [2 marks]

Add sodium hydroxide and from green precipitate.

Describe the test and result for solution of iron(lll) ions. [2 marks]

Add sodium hydroxide and form brown precipitate.

Describe the test and result for carbonate ions. [2 marks]

• Add dilute acid

• Bubble the gas through lime water.

• Cloudy.

Describe the test and result for halide ions. [5 marks]

a) Chloride.

b) Bromide.

c) Iodine.

• Add nitric acid.

• Add dilute silver nitrate solution.

• a) White precipitate.

• b) Cream precipitate.

• c) Yellow precipitate.

Describe the test and result for sulfate ions. [2 marks]

• Add dilute hydrochloric acid.

• Add barium chloride solution.

• White precipitate.